<template>
  <transition name="bounce" enter-active-class="bounceInLeft" leave-active-class="bouceOutRight">
    <div :style="{backgroundImage:`url(${logoBackImageUrl})`}" class="login-container">
      <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on" label-position="left">
        <h3 class="title">高速通行微信公众号后台管理系统</h3>
        <el-form-item prop="username">
          <span class="svg-container">
            <svg-icon icon-class="user" />
          </span>
          <el-input v-model="loginForm.username" name="username" type="text" auto-complete="on" placeholder="请输入用户名" />
        </el-form-item>
        <el-form-item prop="password">
          <span class="svg-container">
            <svg-icon icon-class="password" />
          </span>
          <el-input
            :type="pwdType"
            v-model="loginForm.password"
            name="password"
            auto-complete="on"
            placeholder="请输入密码"
            @keyup.enter.native="handleLogin" />
          <span class="show-pwd" @click="showPwd">
            <svg-icon :icon-class="pwdType === 'password' ? 'eye' : 'eye-open'" />
          </span>
        </el-form-item>
        <!-- 图片验证码 -->
        <el-form-item prop="code">
          <div class="codeWrapper">
            <div class="codeInput">
              <el-input v-model="loginForm.code" name="code" type="text" auto-complete="on" placeholder="请输入验证码" />
            </div>
            <div class="codeContent" @click="refreshCode">
              <identify :identify-code="identifyCode"></identify>
            </div>
          </div>
        </el-form-item>
        <el-form-item>
          <el-button :loading="loading" type="primary" style="width:100%;" @click.native.prevent="handleLogin">
            登 录
          </el-button>
        </el-form-item>
      </el-form>
    </div>
  </transition>
</template>

<script>
// import { Token } from '@/assets/js/storage'
import { isvalidUsername } from '@/utils/validate'
import logoBackImageUrl from '@/assets/img/login_back.jpg'
import Identify from '@/components/Identify'
import { mapGetters } from 'vuex'
export default {
  name: 'Login',
  components: {
    Identify
  },
  data() {
    const validateUsername = (rule, value, callback) => {
      if (!isvalidUsername(value)) {
        callback(new Error('请输入正确的用户名'))
      } else {
        callback()
      }
    }
    const validatePass = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error('密码不能小于6位'))
      } else {
        callback()
      }
    }
    const validateCode = (rule, value, callback) => {
      if (value.length < 1) {
        callback(new Error('验证码不能为空'))
      } else {
        callback()
      }
    }
    return {
      identifyCodes: '1234567890',
      identifyCode: '',
      imgsrc: '',
      loginForm: {
        username: 'admin',
        password: 'admin',
        code: ''
      },
      loginRules: {
        username: [{ required: true, trigger: 'blur', validator: validateUsername }],
        password: [{ required: true, trigger: 'blur', validator: validatePass }],
        code: [{ required: true, trigger: 'blur', validator: validateCode }]
      },
      loading: false,
      pwdType: 'password',
      redirect: undefined,
      logoBackImageUrl
    }
  },
  computed: {
    ...mapGetters([
      'token'
    ])
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  created() {
  },
  mounted() {
    this.identifyCode = ''
    this.makeCode(this.identifyCodes, 4)
  },
  methods: {
    randomNum(min, max) {
      return Math.floor(Math.random() * (max - min) + min)
    },
    refreshCode() {
      this.identifyCode = ''
      this.makeCode(this.identifyCodes, 4)
    },
    makeCode(o, l) {
      for (let i = 0; i < l; i++) {
        this.identifyCode += this.identifyCodes[
          this.randomNum(0, this.identifyCodes.length)
        ]
      }
    },
    showPwd() {
      if (this.pwdType === 'password') {
        this.pwdType = ''
      } else {
        this.pwdType = 'password'
      }
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          if (this.loginForm.code !== this.identifyCode) {
            this.$message({
              message: '验证码输入错误, 请重新输入！',
              type: 'warning'
            })
            this.loginForm.code = ''
            return
          }
          this.loading = true
          this.$store.dispatch('Login', this.loginForm).then(() => {
            this.loading = false
            this.$router.push({ path: this.redirect || '/' })
          }).catch(() => {
            this.loading = false
          })
        } else {
          this.$message({
            showClose: true,
            message: '表单验证失败',
            type: 'warning'
          })
          return false
        }
      })
    }
  }
}
</script>

<style rel="stylesheet/scss" lang="scss">
$bg:#40689a;
$light_gray:#eee;

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;
    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      &:-webkit-autofill {
        -webkit-box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: #fff !important;
      }
    }
  }
  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}

</style>

<style rel="stylesheet/scss" lang="scss" scoped>
$bg:#2d3a4b;
$dark_gray:#889aa4;
$light_gray:#eee;
.login-container {
  position: fixed;
  height: 100%;
  width: 100%;
  background-repeat: no-repeat;
  background-size: cover;
  .login-form {
    position: absolute;
    left: 0;
    right: 0;
    width: 520px;
    max-width: 100%;
    padding: 35px 35px 15px 35px;
    margin: 120px auto;
  }
  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;
    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }
  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }
  .title {
    font-size: 26px;
    font-weight: 400;
    color: $light_gray;
    margin: 0px auto 40px auto;
    text-align: center;
    font-weight: bold;
  }
  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
.codeWrapper {
  display: flex;
  justify-content: space-between;
  .codeInput {
    width: 450px;
  }
  .codeContent {
    height: 45px;
    img {
      width: 114px;
      height: 46px;
    }
  }
}
</style>
